. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU 23 Body robust anteriorly, its depth at origin of dorsal to ; head low, broad, heavy, its length to first gill slit to in length anterior to base of caudal; snout short, rounded, to in head to first gill slit; eye elongate, to in head, with a very heavy bony ridge above; spiracle small, below and slightly posterior to eye; mouth small, narrow, with thick labial lobes; teeth in anterior parts of jaws with a long rather pointed central cusp and a much smaller cusp on each side, the centr
. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU 23 Body robust anteriorly, its depth at origin of dorsal to ; head low, broad, heavy, its length to first gill slit to in length anterior to base of caudal; snout short, rounded, to in head to first gill slit; eye elongate, to in head, with a very heavy bony ridge above; spiracle small, below and slightly posterior to eye; mouth small, narrow, with thick labial lobes; teeth in anterior parts of jaws with a long rather pointed central cusp and a much smaller cusp on each side, the central cusps either broken or worn down in the lower jaw in a large female; dermal denticles below base of first dorsal more or less definitely -\—shaped in two male specimens at hand, less definitely so, with one bar of the plus often forked, in a large female; first dorsal preceded by a very strong spine, about half as high as the fin, origin somewhat behind inner angle of base of pectoral, its height scarcely exceeding length of its base, its distal margin slightly convex; predorsal length to in length to base of caudal; distance between dorsal fins to ; second dorsal scarcely smaller than the first, and similar to it in all respects, ending. Figure 4.—Heterodontus quoyi (Freminville). From the type of Gyropleurodus peruanus Evermann and Radcliffe, 565 mm. long, Lobes de Tierra Island, Peru ( No, 77691). (After Evermann and Radcliffe, 1917.) about an eye's diameter in advance of origin of anal; caudal short, the upper lobe not greatly exserted, exceeding length of lower lobe by less than twice diameter of eye, its lower distal margin concave, its length to in length anterior to its base; anal fin shorter but higher than second dorsal, its base to in head; ventral inserted somewhat nearer pectoral than anal, its outer margin to in head; clasper in adult males about three times as long as that portion of fin next to it; pecto
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